Improvement in tuckers for sewing-machines



C. F. ,KNOOH. Tucker forASewing-Maohin'es.

No. 2l6,l92. Patented June 3,1879."

r h a W i mines-99s YO-UTHOGRAPNER, WASHINGTON D c UNITED STATES PATENT QFFIOE.

CHARLES F. KNOOH, OF NEW YORK, N. Y.

IMPROVEMENT m TUCKERS F OR SEWING-MACHINES.

Specification forming part of Letters Patent No. 216,192, dated June 3, 1879; application filed March 15, 1879.

To all whom it may concern Be it known that I, CHARLES F. KNOGH, of the city and State of New York, haveinvented certain new and useful Improvements in Tuckers for Sewing-Machines, of which the follow ing is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention consists in a tucker or tucking attachment for sewing-machines of novel construction, to provide for folding or laying over the tucks, and also for retaining them while being stitched as folded, so that the stitches which secure them pass through three thicknesses of material, and each succeeding tuck is guided by an adjustable gage arranged to enter within the previous tuck, and serving to space the distances of the tucks apart; also, wherebyprovision is made for receiving within the main holder of the tucker the goods as tucked.

In the accompanying drawings, Figure 1 represents a plan view of a tucker constructed in accordance with my invention, and showinga piece of cloth as in the act of having a tuck formed in it; Fig. 2, a side view of the same; Fig. 3, a front-end view thereof; and Figs. 4: and 5, vertical sections on the line 00 m in Fig. 1, showing the work at different stages in the operation. Fig. 6 is an edgeview of a piece of tucked goods as made by the attachment.

A A indicate the main plate, which forms the holder or frame portion of, the tucker.

' table of the sewing-machine by means of a screw passing through an aperture, b, and has attached to its forward end the outer former,

B, of graduated U or hook shape in its transverse section, and over and along within which the cloth 0 is fed to form the tuck, and to provide for its being stitched by the needle 0 of the machine in line with the tuck, as shown in the drawings.

Attached to the front and free or yielding end of the upper leaf, A1, of the main plate, frame, or holder of the tucker is an inner former or blade, D, which enters within the fold formed by the outer former, B, and, in conjunction with said outer former, serves to shape the tuck and to lay it so that as the cloth or material 0 passes from the tucker it is delivered with the tuck folded or laid down, so that.

the sewing-needle will cause the stitches which secure the goods to passthrough three thicknesses of the material, as shown in Fig. 6.

Attached also to the yielding leaf A of the main plate, frame, or holder is a gage or gaging-blade, E, adjustable along said leaf relatively to the formers B and D, forreoeiving against it, as shown in Fig. 5, each previouslystitched tuck, which thus forms agulcle for the succeeding tuck. This gage does not serve to determine the width of the tucks, but simply the distances apart of the tucks.

The direction, as regards entry and passage of the goods G is clearly illustrated in Figs.

at and 5 of the drawings, and the goods as in-.

Monnrs A. TYNG, Enw. P. Jnssur. 

